Linux System Programming

Introduction to Linux Architecture

• Linux Layered Architecture

• Bootup Sequence

• File Tree & Types

• File Systems

• Super Block & Inode

• System Vs Function Calls

• System Call Sequence

• File descriptor table

File Management

• File related System Calls

• File Control Operations

• File Locking

• fcntl() calls

Process Management

• Mode of Execution

• Address Space

• Context Switching

• Process Structure & States

• Scheduling & Priority

• Process Creation & Exec

• fork()/exec() calls

Signals Vs. Interrupts

• Signals in Unix

• Receiving a Signal

• Handling a Signal

• Signal System Calls

User Vs Daemon Process

• Characteristics of a Daemon

• Writing a Daemon

• Timers & Resource Limits

• Interval Timers

• High Resolution Timers

• System calls for Timers

• Resource Limits

Type of IPC Mechanisms

• Primitive IPCs

• Pipes & FIFOs

• Full Duplex Pipes

• Persistence of Pipes & FIFOs

• Pros and Cons of Pipes/FIFOs

• Limitation of Pipes/FIFOs

Shared Memory

• Shared Memory System Calls

• Pros and Cons of Shared Memory

Message Queues

• Message Queue System Calls

• Pros and Cons of Message Queues

Semaphores

• Classical P() & V() Operations

• Binary & Counting Semaphores

• Semaphore System Calls

• Pros and Cons of Semaphores